Simplified propelling system with drive integral to each other

Abstract

Simplified propelling system for a propeller-supporting shaft of adjustable inclination, where the front end of the propeller-supporting shaft is carried by a hollow cylindrical body steadily fixed to the reversing gearbox, which in turn is steadily fixed to the engine. The hollow cylindrical body comes out of the stern surface of the boat through a hole sealed by rubber rings which allow small angle adjustments to modify the inclination of the propeller-supporting shaft, further carried by an adjustable support placed outside the boat; the inclination of the propeller-supporting shaft is modified by raising or by lowering a single assembly including the engine, the reversing gearbox, the hollow cylindrical body and the propeller-supporting shaft.

I claim: 
     
       1. Simplified propelling system for a boat with propeller drive, comprising at least an engine, a reversing gearbox, having a box housing and an outlet shaft, solidly linked to said engine, a propeller-supporting shaft carried by an adjustable support placed outside the boat and means to transmit the motion from said reversing gearbox to said shaft supporting said propeller, said propelling system comprising, combined together: a hollow cylindrical body rigidly fixed to the box housing of said reversing gearbox;   at least a thrust bearing, placed inside said hollow cylindrical body and fitted on said propeller-supporting shaft;   at least a rubber ring placed between the external surface of said hollow cylindrical body and a toroidal element applied to a corresponding hole in the stern surface of said boat;   wherein said propeller-supporting shaft is spline-linked to the outlet shaft of said reversing gearbox and said engine is supported by adjustable feet.   
     
     
       2. Propelling system according to claim 1, wherein said at least one thrust bearing is fitted on said propeller-supporting shaft by means of a bushing. 
     
     
       3. Propelling system according to claim 1, wherein said at least one rubber ring is of the "O-ring" kind. 
     
     
       4. Propelling system according to claim 1, wherein said hollow cylindrical body is integral to said box housing of said reversing gearbox. 
     
     
       5. Propelling system according to claim 1, wherein said propeller-supporting shaft is a single assembly with said hollow cylindrical body, said reversing gearbox and said engine. 
     
     
       6. Propelling system according to claim 1, wherein said hollow cylindrical body is formed by two parts linked to each other by reversible fastening means. 
     
     
       7. Simplified propelling device system for a boat with propeller drive, comprising at least an engine, a reversing gearbox, having a box housing and an outlet shaft, solidly linked to said engine, a propeller-supporting shaft carried by an adjustable support placed outside the boat and means to transmit the motion from said reversing gearbox to said shaft supporting said propeller, said propelling system comprising, combined together: a hollow cylindrical body rigidly fixed to the box housing of said reversing gearbox;   at least a thrust bearing incorporated in said reversing gearbox;   at least a rubber ring placed between the external surface of said hollow cylindrical body and a toroidal element applied to a corresponding hole in the stern surface of said boat;   wherein said propeller-supporting shaft is rigidly linked to the outlet shaft of said reversing gearbox and said engine is supported by an adjustable feet.   
     
     
       8. Propelling system according to claim 7, wherein said at least one rubber ring is of the "O-ring" kind. 
     
     
       9. Propelling system according to claim 7, wherein said hollow cylindrical body is integral to said box housing of said reversing gearbox. 
     
     
       10. Propelling system according to claim 7, wherein said propeller-supporting shaft is a single assembly with said hollow cylindrical body, said reversing gearbox and said engine. 
     
     
       11. Propelling system according to claim 7, wherein said hollow cylindrical body is formed by two parts linked to each other by reversible fastening means. 
     
     
       12. Simplified propelling system for a boat with propeller drive, comprising at least an engine, a reversing gearbox, having a box housing and an outlet shaft, solidly linked to said engine, a propeller-supporting shaft carried by an adjustable support placed outside the boat and means to transmit the motion from said reversing gearbox to said shaft supporting said propeller, said propelling system comprising, combined together: a hollow cylindrical body rigidly fixed to the box housing of said reversing gearbox;   at least a thrust bearing, placed inside said hollow cylindrical body and fitted on said propeller-supporting shaft;   at least a rubber ring placed between the external surface of said hollow cylindrical body and a toroidal element applied to a corresponding hole in the stern surface of said boat;   wherein said propeller-supporting shaft is linked to the outlet shaft of said reversing gearbox and said engine is supported by adjustable feet.